Number
720 in Roman numerals
720 is written DCCXX
Type any other number or numeral below to convert it.
Above 3,999? Type the barred part in brackets, e.g. (IV)CC = 4,200.
How DCCXX is built
Roman numerals are written one decimal place at a time, largest first.
- DCChundreds · 7D (500) plus CC (200) makes 700.
- XXtens · 2X written 2 times: 2 × 10 = 20.
700 + 20 = 720
No subtraction is needed here: every letter is the same size or smaller than the one before it, so you simply add them up.
Mistakes to avoid
- There's no letter for zero. The zero is simply left out, which is why 720 has 2 parts, not 3.
About the number 720
- 720 is even and can be split into prime factors: 2 × 2 × 2 × 2 × 3 × 3 × 5, or in Roman numerals II × II × II × II × III × III × V.
- DCCXX has 5 letters. 604 of the numbers up to 1,000 have longer numerals.
Counting from 711 to 720
Every number from 711 to 720 starts DCCX (710); only the ending changes.
| Number | Roman numeral |
|---|---|
| 711 | DCCXI |
| 712 | DCCXII |
| 713 | DCCXIII |
| 714 | DCCXIV |
| 715 | DCCXV |
| 716 | DCCXVI |
| 717 | DCCXVII |
| 718 | DCCXVIII |
| 719 | DCCXIX |
| 720 | DCCXX |